Snapchat is the next big thing as of late. Anyone do it much? I use it quite often since it's quick and can be pretty fun. Right now the only official apps are for iPhone and select Android devices. I use a third-party app on my WP8.

I didn't use it at all until a girl I met over the Atlantic Ocean (we were both flying home to Germany from the US) gave me her Snapchat nick. We spent 9 hours together in a plane after all, and thought it was a fun way to stay in touch.

Eventually, after hundreds of snaps, these snaps turned into messages, and messages turned into visits. Foreignness became great friendship, and that friendship turned into a (long distance but still amazing) relationship about two months ago.

So, uh, I'm pretty glad Snapchat became a "normal culture" thing at some point :P